WO2017185687A1

WO2017185687A1 - Charging protection method and apparatus, and electronic device

Info

Publication number: WO2017185687A1
Application number: PCT/CN2016/102968
Authority: WO
Inventors: 雷军
Original assignee: 乐视控股（北京）有限公司; 乐视移动智能信息技术（北京）有限公司
Priority date: 2016-04-27
Filing date: 2016-10-21
Publication date: 2017-11-02
Also published as: CN105958562A

Abstract

Disclosed are a charging protection method and apparatus, and an electronic device. The method comprises: identifying whether a charger inserted in a universal serial bus (USB) interface is a power delivery (PD) charger supporting PD; if the charger inserted in the USB interface is a PD charger supporting PD, sending state monitoring messages to the PD charger at set time intervals so as to monitor a state; determining whether an exception occurs in the PD charger according to the status of making state monitoring responses by the PD charger; and if an exception occurs in the PD charger, cutting off a charging connection between an electronic device and the PD charger.

Description

Charging protection method, device and electronic device

The present application claims the priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of Universal Serial Bus Power Delivery (USB-PD) technology, for example, to a charging protection method, device, and electronic device.

Background technique

USB-PD is an emerging fast charging technology. It mainly implements this kind of fast charging design through Type-C interface. In order to understand USB-PD charging technology, the basic structure of Type-C interface will be explained first.

The biggest feature of the Type-C interface is that it supports the "front and back insertion" function that can be inserted from both sides. The A side and the B side respectively have 12 pins. The arrangement of each pin is shown in Table 1:

Table 1:

Among them, TX1+, TX1-, RX1+, RX1-, TX2+, TX2-, RX2+, RX2- are four pairs of differential signal pins, GND is the ground pin, and D+ and D- are USB differential signal pins for USB2.0 compatibility. VBUS is the power pin, and CC1 and CC2 are the pins for detecting the forward and reverse insertion, distinguishing the master and slave, and configuring the VBUS voltage. SBU1 and SBU2 are bus pins.

Since the Type-C interface has four power pins and four ground pins, the Type-C interface can theoretically support 100W power output, which is why the Type-C interface can achieve USB-PD fast charging.

On this basis, USB-PD fast charging refers to requesting the charger to adjust the output power through the USB 5V voltage (VBUS) DC level on the frequency-shift keying (FSK) signal. The process of pressure and current, the process includes the following steps 1-5.

In step 1, the electronic device identifies whether the inserted charger is a PD charger that supports fast charging. If the inserted charger is a PD charger that supports fast charging, the switching is performed, that is, the differential signal pin of the Type-C is changed to Used to transmit PD signals (including PD commands and data, etc.), and change the SBU1 and SUB2 bus pins of Type-C to Auxiliary (AUX) signals.

In step 2, the USB-PD device policy manager is started, the policy manager monitors the FSK signal coupled on the DC level of the VBUS, and decodes the Capabilities Source message therefrom, and then parses the message according to the USB-PD specification. A list of all voltage and current pairs supported by the PD charger.

In step 3, the electronic device selects a voltage and current pair from the Capabilities Source message according to the configuration of the user, and loads the voltage and current pairs into the payload portion of the charging request message, and then the policy manager will The FSK signal is coupled to the VBUS DC level.

In step 4, the charger decodes the FSK signal and sends an Accept message to the electronic device while adjusting the output voltage and current of the charger.

In step 5, after receiving the Accept message, the electronic device adjusts the charging voltage and current of the charging IC.

Here, the electronic device can dynamically send a Request message during the charging process to request the charger to change the output voltage and current, thereby implementing a fast charging process.

During the above fast charging process, the electronic device cannot recognize whether the PD charger that establishes the connection has been damaged, and therefore cannot perform charging protection in the case where the PD charger has been damaged, which is likely to be caused by the PD charger losing the charging voltage and The control of the current causes damage to the electronic equipment.

Summary of the invention

Embodiments of the present disclosure provide a technical solution for performing charging protection in the event that damage to a PD charger is detected.

In a first aspect of the present disclosure, a charging protection method is provided, including:

Identify whether the charger plugged into the Universal Serial Bus USB interface is a fast charging PD charger that supports fast charging. If the charger plugged into the USB interface is a PD charger that supports fast charging, then:

Sending a status monitoring message to the PD charger for status monitoring at set intervals;

Determining whether the PD charger is abnormal according to a condition of the status monitoring response of the PD charger;

If the PD charger is abnormal, the charging connection between the electronic device and the PD charger is disconnected.

Optionally, the method further includes:

Sending a software reset command to the PD charger to perform a software reset of the charger according to the result of determining the abnormality for the first time;

After performing the software reset, determining whether the PD charger is abnormal according to a status monitoring response of the PD charger;

If the PD charger has returned to normal, the charging connection is re-established.

Optionally, the method further includes:

According to the result of the software charger still determining that the PD charger is abnormal, sending a hardware reset command to the PD charger to perform hardware reset of the charger;

After performing the hardware reset, determining whether the PD charger is abnormal according to a status monitoring response of the PD charger;

Optionally, the method further includes:

According to the result that the PD charger is abnormal after the hardware reset, it is determined that the PD charger has been damaged, and the corresponding alarm is triggered.

In a second aspect of the present disclosure, a charging protection device is provided, including:

The identification module is configured to identify whether the charger inserted into the USB interface is a PD charger that supports fast charging;

The monitoring message sending module is configured to send the status monitoring message to the PD charger for status monitoring at a set time interval;

a state analysis module, configured to determine whether the PD charger is abnormal according to a status monitoring response of the PD charger; and

An execution module, configured to determine, in the state analysis module, that the PD charger is abnormal Next, disconnect the charging connection between the electronic device and the PD charger.

Optionally, the device further includes:

a software reset module, configured to send a software reset command to the PD charger to perform a software reset of the charger according to the result that the state analysis module first determines that an abnormality occurs;

The state analysis module is further configured to determine, after the software reset is performed, whether the PD charger is abnormal according to a status monitoring response of the PD charger;

The execution module is further configured to re-establish the charging connection if the state analysis module determines that the PD charger has returned to normal.

Optionally, the device further includes:

a hardware reset module, configured to: according to the state analysis module, determine, after a software reset, that the PD charger has an abnormal result, send a hardware reset command to the PD charger to perform a hardware reset of the charger;

The state analysis module is further configured to determine whether the PD charger is abnormal according to a condition of the state monitoring response of the PD charger after performing the hardware reset.

Optionally, the device further includes:

The alarm triggering module is configured to determine, according to the state analysis module, that the PD charger is abnormal after the hardware reset, determine that the PD charger has been damaged, and trigger a corresponding alarm.

In a third aspect of the present disclosure, an electronic device is provided, comprising the apparatus of the second aspect of the present disclosure.

A fourth aspect of the present disclosure provides an electronic device including an interface device, a memory, and a processor, the interface device configured to establish a connection with a charger through a Type-C data line, the memory being configured to store an instruction, The instructions are arranged to control the processor to operate to perform the method according to the first aspect of the present disclosure.

In a fifth aspect of the present disclosure, a non-transitory computer readable storage medium storing computer executable instructions for causing the computer to perform the method described above is provided.

A sixth aspect of the present disclosure also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions When executed by a computer, the computer is caused to perform the method described above.

The inventors of the present disclosure have found that in the related art, there is a problem that charging protection cannot be performed in the case where an abnormality occurs in the PD charger that establishes connection. In the embodiment of the present disclosure, by sending a status monitoring message to the PD charger for status monitoring, it is possible to determine whether the PD charger is abnormal according to the status of the PD charger performing the status detection response, and determining that the PD charger is abnormal. The charging connection between the electronic device and the PD charger is disconnected, and the electronic device is protected from damage.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a flow chart of a first embodiment of a charging protection method of the present disclosure;

2 is a flow chart of a second embodiment of the charging protection method of the present disclosure;

3 is a flow chart of a third embodiment of the charging protection method of the present disclosure;

4 is a block schematic diagram of an implementation structure of a charging protection device of the present disclosure;

5 is a block schematic diagram of an implementation structure of an electronic device of the present disclosure.

detailed description

The embodiments are described below with reference to the accompanying drawings, and the features of the embodiments and the embodiments may be arbitrarily combined with each other without conflict. It should be noted that the present disclosure does not limit the relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments.

In all examples shown and discussed herein, any numerical values are to be construed as merely exemplary. Accordingly, other examples of the exemplary embodiments may have different numerical values.

It should be noted that similar reference numerals and letters indicate similar items in the following figures.

The present disclosure provides a monitoring anomaly that protects the PD charger from charging in the event of an abnormality in the PD charger.

1 is a flow chart of a first embodiment of a charge protection method of the present disclosure.

In step 110, the electronic device recognizes whether the charger inserted into the Universal Serial Bus (USB) interface is a Power Delivery (PD) charger that supports fast charging, such as a charger inserted into the USB interface. The PD charger that supports fast charging performs the following charging power real-time adjustment steps, that is, steps 120 to 140. If the charger inserted into the USB interface is not a PD charger that supports fast charging, normal charging is performed.

This conventional charging is performed in accordance with a conventional 7.5 W (voltage 5 V, current 1.5 A) charging mode.

The identification operation is performed between the electronic device and the charger in accordance with the USB-PD protocol.

In step 120, the electronic device sends a status monitoring message to the PD charger for status monitoring.

One end of the electronic device may send a status monitoring message to the PD charger at set time intervals to enable real-time monitoring of the status of the PD charger.

In step 130, the electronic device determines whether the PD charger is abnormal according to the condition of the status monitoring response of the PD charger. If the PD charger is abnormal, step 140 is performed. If the PD charger does not have an abnormality, the system returns to Step 120 performs condition monitoring.

For example, it may be set that the response message returned by the PD charger is not received within the set time from the transmission of the status monitoring message, and it is determined that the PD charger is abnormal. For example, the status monitoring message may be set to be continuously set, and the response message returned by the PD charger is not received, and it is determined that the PD charger is abnormal. The more the number is set, the more the false determination can be reduced. The probability of this, but also reduces the sensitivity of handling abnormal conditions, therefore, both the probability of misjudgment and the sensitivity of processing can be considered, and the number of times can be set to three times.

In step 140, the charging connection between the electronic device and the PD charger is disconnected.

The operation of disconnecting the charging connection can be implemented by controlling the charging management circuit, and disconnecting the charging connection does not affect the communication connection between the PD charger and the electronic device, that is, as long as the user does not pull the data line from the USB interface of the electronic device Out, the communication connection between the two can be made.

In order to perform a charging operation after the abnormality is detected, the PD charger can be returned to normal, the disclosed method also provides a second embodiment.

2 is a flow chart of a second embodiment of the disclosed method.

As shown in FIG. 2, in step 210, the electronic device sends a software reset command to the PD charger to perform a software reset of the charger according to the result of the first determination of the abnormality.

The abnormality of the first judgment is the result obtained by the above judgment in step 130.

In step 220, the electronic device sends a status monitoring message to the PD charger for status monitoring.

The operation of the transmission status monitoring message is continued according to the set time interval. Therefore, after the software reset is performed, there is still an operation of transmitting the status monitoring message.

In step 230, after performing a software reset, the electronic device determines whether the PD charger is abnormal according to the condition of the PD charger performing the status monitoring response. If the PD charger is abnormal, the state of the charging connection is disconnected, such as If there is no abnormality in the PD charger, the charging connection between the two is re-established to charge through the PD charger.

In order to perform a charging operation in the event that the software reset does not work, there is still a chance to restore the PD charger to normal, the disclosed method also provides a third embodiment.

3 is a flow chart of a third embodiment of the disclosed method.

As shown in FIG. 3, in step 310, one end of the electronic device determines that an abnormal result has occurred after the software reset, and sends a hardware reset command to the PD charger to perform hardware reset of the charger.

After the software is reset, it is judged that the abnormality is the result obtained by the above step 230.

In step 320, the electronic device sends a status monitoring message to the PD charger for status monitoring.

The operation of the transmission status monitoring message is continued according to the set time interval. Therefore, after the hardware reset is performed, there is still an operation of transmitting the status monitoring message.

In step 330, after performing a hardware reset, the electronic device determines whether the PD charger is abnormal according to the status of the PD charger performing the status monitoring response. If the PD charger is abnormal, the charging connection is disconnected. If there is no abnormality in the PD charger, re-establish the charging connection between the two to charge through the PD charger.

After the charging connection between the two is re-established in step 330, the process returns to the above step 120 to perform the next monitoring cycle. For this reason, the above-mentioned first judgment abnormality should be understood as the first judgment in each monitoring cycle. .

On this basis, if the PD charger cannot be restored after being reset by software and hardware, the PD charger has been damaged, and an alarm can be triggered to remind the user that the PD charger has been damaged. The bad fact is that at this point, the user should unplug the data cable and disconnect the PD charger from the electronic device.

The triggering alarm includes, for example, at least one of a trigger sound, a light, and a text display alarm.

It can be seen that the method of the present disclosure can disconnect the charging connection when the PD charger is abnormal, so as to effectively protect the electronic device, and can also automatically take measures to restore the PD charger to the normal state to charge the electronic device. Can improve user experience.

The present disclosure also provides a charging protection device, and FIG. 4 is a block schematic diagram of an implementation structure of the device.

As shown in FIG. 4, the charging protection device 400 includes an identification module 401, a monitoring message sending module 402, a state analysis module 403, and an execution module 404.

The above identification module 401 is configured to recognize whether the charger inserted into the USB interface is a PD charger that supports fast charging.

The monitoring message sending module 402 is configured to send a status monitoring message to the PD charger for status monitoring at set time intervals.

The state analysis module 403 is configured to determine whether the PD charger is abnormal according to the status of the PD charger performing a status monitoring response.

The execution module 404 is configured to disconnect the charging connection between the electronic device and the PD charger if the state analysis module 403 determines that the PD charger is abnormal.

The disclosed apparatus 400 may further include a software reset module (not shown) configured to first transmit a software reset command to the PD charger for performing the charger according to the state analysis module 403 first determining the result of the abnormality. Software reset. Correspondingly, the state analysis module 403 is further configured to determine whether the PD charger is abnormal according to a status of the PD charger performing a state monitoring response after performing the software reset. Correspondingly, the execution module 404 is further configured to re-establish the charging connection if the state analysis module 403 determines that the PD charger has returned to normal.

The disclosed apparatus 400 may further include a hardware reset module (not shown) configured to send a hardware reset command to the PD charger for charging according to the state analysis module 403 still determining the abnormal result after the software reset. Hardware reset of the device. Correspondingly, the state analysis module 403 is further configured to determine whether the PD charger is abnormal according to the status of the PD charger performing the state monitoring response after performing the hardware reset.

The disclosed apparatus may further include an alarm triggering module (not shown) that sets the alarm triggering module In order to determine that an abnormality has occurred after the hardware is reset according to the state analysis module 403, it is determined that the PD charger has been damaged and a corresponding alarm is triggered.

The present disclosure also provides an electronic device that, according to an aspect, includes the charge protection device 400 of the present disclosure.

FIG. 5 is a block schematic diagram of an implementation structure of the electronic device of the present disclosure.

As shown in FIG. 5, the electronic device 500 includes a memory 501 and a processor 502 that is configured to store instructions that are arranged to control the processor 502 to operate to perform the charging protection method described above.

In addition, as shown in FIG. 5, the electronic device 500 further includes an interface device 503, an input device 504, a display device 505, a communication device 506, a speaker 507, a microphone 508, and a temperature sensor for collecting a temperature signal (in the figure). Not shown) and so on. Although a plurality of devices are illustrated in FIG. 5, the disclosed electronic device may relate only to some of the devices, such as processor 501, memory 502, interface device 503, and the like.

The communication device 506 can be wired or wirelessly communicated, for example.

The interface device 503 includes, for example, a headphone jack, a Type-C interface, etc., such that the Type-C interface of the interface device 503 establishes a connection with the PD charger through the Type-C data line.

The input device 504 described above may include, for example, a touch screen, a button, and the like.

The display device 505 described above is, for example, a liquid crystal display, a touch display, or the like.

The electronic device of the present disclosure is, for example, a mobile phone, a tablet computer, or the like.

The embodiments in the present specification are described in a progressive manner, and the same similar parts between the embodiments may be referred to each other, and each embodiment illustrates differences from other embodiments, but those skilled in the art should It is clear that the above embodiments can be used alone or in combination with each other as needed. In addition, for the device embodiment, since the device embodiment corresponds to the method embodiment, please refer to the description of the corresponding part of the method embodiment. The system embodiments described above are merely illustrative, and the modules illustrated as separate components may or may not be physically separate.

The present disclosure can be an apparatus, method, and/or computer program product. The computer program product can include a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions that, when executed by a computer, cause the computer to perform any of the above-described embodiments method.

The computer readable storage medium can be a tangible device that can hold and store the instructions used by the instruction execution device. The computer readable storage medium can be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. Examples of computer readable storage media (non-exhaustive lists) include: portable computer disks, hard disks, random access memory (RAM), read-only memory ROM, erasable Erasable Programmable Read Only Memory (EPROM), Flash (Flash), Static Random Access Memory (SRAM), Compact Disc Read-Only Memory (CD-ROM) ), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card with instructions stored therein, and any suitable combination of the above. A computer readable storage medium as used herein is not to be interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (eg, a light pulse through a fiber optic cable), or through a wire The electrical signal transmitted.

The computer readable program instructions described herein can be downloaded to a plurality of computing/processing devices from a computer readable storage medium or downloaded to an external computer or external storage device over a network, such as the Internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and/or edge servers. A network adapter card or network interface in each computing/processing device receives computer readable program instructions from a network and forwards the computer readable program instructions for storage on a computer readable storage medium in a plurality of computing/processing devices in.

Computer program instructions for performing the operations of the present disclosure may be assembly instructions, Industry Standard Architecture (ISA) instructions, machine instructions, machine related instructions, microcode, firmware instructions, state setting data, or in one or more Source code or object code written in any combination of programming languages, including object oriented programming languages - such as Smalltalk, C++, etc., as well as conventional procedural programming languages - such as the "C" language or similar programming languages. The computer readable program instructions can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer, partly on the remote computer, or entirely on the remote computer or server. carried out. In the case of a remote computer, the remote computer can be connected to the user computer through any kind of network including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using the Internet) The service provider comes to connect via the Internet). In some embodiments, custom electronic circuits, such as programmable logic circuits, are personalized by utilizing state information of computer readable program instructions, A Field-Programmable Gate Array (FPGA) or a Programmable Logic Array (PLA) that can execute computer readable program instructions to implement the present disclosure.

The present disclosure is described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system) and computer program products according to embodiments of the present disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowcharts and/or block diagrams can be implemented by computer readable program instructions.

The computer readable program instructions can be provided to a general purpose computer, a special purpose computer, or a processor of other programmable data processing apparatus to produce a machine such that when executed by a processor of a computer or other programmable data processing apparatus Means for implementing the functions/acts specified in one or more of the blocks of the flowcharts and/or block diagrams. The computer readable program instructions can also be stored in a computer readable storage medium that causes the computer, programmable data processing device, and/or other device to operate in a particular manner, such that the computer readable medium storing the instructions includes An article of manufacture includes instructions for implementing aspects of the functions/acts recited in one or more of the flowcharts and/or block diagrams.

The computer readable program instructions can also be loaded onto a computer, other programmable data processing device, or other device to perform a series of operational steps on a computer, other programmable data processing device or other device to produce a computer-implemented process. Thus, instructions executed on a computer, other programmable data processing apparatus, or other device implement the functions/acts recited in one or more of the flowcharts and/or block diagrams.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a portion of an instruction that includes one or more components for implementing the specified logical functions. Executable instructions. In some alternative implementations, the functions noted in the blocks may also occur in a different order than those illustrated in the drawings. For example, two consecutive blocks may be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented in a dedicated hardware-based system that performs the specified function or function. Or it can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, implementation by software, and implementation by a combination of software and hardware are equivalent.

Industrial applicability

The charging protection method, device and electronic device provided by the embodiments of the present disclosure disconnect the charging connection between the electronic device and the PD charger when determining that the PD charger is abnormal, and protect the electronic device from damage.

Claims

A charging protection method applied to an electronic device, comprising:

Identify whether the charger plugged into the Universal Serial Bus USB interface is a fast charging PD charger that supports fast charging. If the charger plugged into the USB interface is a PD charger that supports fast charging, then:

Sending a status monitoring message to the PD charger for status monitoring at set intervals;

Determining whether the PD charger is abnormal according to a condition of the status monitoring response of the PD charger;

If the PD charger is abnormal, the charging connection between the electronic device and the PD charger is disconnected.
The method of claim 1 further comprising:

Sending a software reset command to the PD charger to perform a software reset of the charger according to the result of determining the abnormality for the first time;

After performing the software reset, determining whether the PD charger is abnormal according to a status monitoring response of the PD charger;

If the PD charger has returned to normal, the charging connection is re-established.
The method of claim 2, the method further comprising:

According to the result of the software charger still determining that the PD charger is abnormal, sending a hardware reset command to the PD charger to perform hardware reset of the charger;

After performing the hardware reset, determining whether the PD charger is abnormal according to a status monitoring response of the PD charger;

If the PD charger has returned to normal, the charging connection is re-established.
The method of claim 3, further comprising:

According to the result that the PD charger is abnormal after the hardware reset, it is determined that the PD charger has been damaged, and the corresponding alarm is triggered.
A charging protection device comprising:

The identification module is configured to identify whether the charger inserted into the USB interface is a PD charger that supports fast charging;

Monitoring message sending module, configured to send status monitoring message to PD charging at set time interval Condition monitoring;

a state analysis module, configured to determine whether the PD charger is abnormal according to a status monitoring response of the PD charger; and

And an execution module, configured to disconnect the charging connection between the electronic device and the PD charger if the state analysis module determines that the PD charger is abnormal.
The apparatus of claim 5, the apparatus further comprising:

a software reset module, configured to send a software reset command to the PD charger to perform a software reset of the charger according to the result that the state analysis module first determines that an abnormality occurs;

The state analysis module is further configured to determine, after the software reset is performed, whether the PD charger is abnormal according to a status monitoring response of the PD charger;

The execution module is further configured to re-establish the charging connection if the state analysis module determines that the PD charger has returned to normal.
The apparatus of claim 6 further comprising:

a hardware reset module, configured to: according to the state analysis module, determine, after a software reset, that the PD charger has an abnormal result, send a hardware reset command to the PD charger to perform a hardware reset of the charger;

The state analysis module is further configured to determine whether the PD charger is abnormal according to a condition of the state monitoring response of the PD charger after performing the hardware reset.
The apparatus of claim 7 further comprising:

The alarm triggering module is configured to determine, according to the state analysis module, that the PD charger is abnormal after the hardware reset, determine that the PD charger has been damaged, and trigger a corresponding alarm.
An electronic device comprising the device of any one of claims 5 to 8.
An electronic device comprising an interface device, a memory and a processor, the interface device being arranged to establish a connection with a charger via a Type-C data line, wherein the memory is configured to store an instruction, the instruction being set to control The processor is operative to perform the method of any one of claims 1 to 4.
A non-transitory computer readable storage medium storing computer executable instructions for causing the computer to perform the method of any of claims 1-4.
A computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to execute The method of claims 1-4.